Keysight Technologies FieldFox N9913A Service Manual page 140

Repair and Replacement Procedures
Removing and Replacing the Measurement Group Assemblies
Replacing the Type-N RF Connectors and RF Cables 
(N991xA, N992xA, N993xA)
1. Separate the front and rear cases. See
2. Remove all measurement group assemblies as one unit. Refer to
3. Remove the RF top assembly. Refer to
4. Refer to
5. Remove the two screws (2) from the type-N RF connector to be replaced.
6. Lift the type-N RF connector upwards and out of the RF bottom shield.
7. The RF input cable can now be replaced by disconnecting the other end of
8. Remove the RFI O-ring.
9. Remove the old insulator and install a new one.
10.Position the new type-N RF connector in the RF bottom shield, making
11.Install a new RFI O-ring over the new type-N RF connector in the position
12.Loosely reinstall the two screws (2). Note the location for these two
13.Tighten the cable connector nut(s) on cable W1 or W2.
14.Continue with
15.Perform the steps under
140
Cases" on page 115.
"Removing All Measurement Group Assemblies as One Unit" on page
Top Panel Assembly" on page
Figure 7-24. Disconnect the cable connector nut on cable W1 or
W2, depending on which connector or cable is being replaced. Do not
attempt to remove the cable, just release the connector nut.
the cable and removing it. When installing the new cable, do not tighten
either of the cable connector nuts until both of them have been installed
finger tight.
sure that it aligns with the cable connector underneath. Loosely install the
cable connector nut.
shown.
screws in the illustration. To ensure proper alignment, install two
additional screws, finger tight, in the two empty holes in the type-N RF
connector, then tighten the two screws that secure the connector.
Remove the two alignment screws.
step 5 of the
Assembly procedure on
"Separating the Front and Rear
"Removing and replacing the RF
138.
Removing and replacing the RF Top Panel
page 138.
"Final Assembly Procedure" on page
Keysight FieldFox Handheld Analyzers Service Guide
136.
164.